"Gossip Girl" Costume Designer Eric Daman talks about bringing French influences into Serena and Blair’s costumes and a very different look for Chuck Bass. Don't miss the season premiere Monday, Sept. 13. Gossip Girl Video: Watch Gossip Girl full episodes, previews, clips, interviews and more video. Gossip Girl is based on the best-selling series of young-adult novels by Cecily von Ziegesar and executive produced by Josh Schwartz and Stephanie Savage. Gossip Girl is a drama based on the lives of privileged Manhattan prep school teens.